Neck construction for jug



May 13, 1958 A. s. KNAPP 2,834,503

NECK CONSTRUCTION FOR JUG Filed March 5, 1956 ATTORNEY-5.

United States Patent f 2,834,503 NECK CONSTRUCTION FOR JUG Andrew S.Knapp, St. Louis, Mo.,

Monarch Company, St. Louis, Mo., Delaware assignor to Knappa corporationof This invention relates to a neck construction for a jug, particularlya jug of the type which is provided with double walls for the purpose ofmaintaining the temperature of materials stored therein.

The type of jug to which this invention relates is a very competitiveone in which cost is very important, as is the quality of the product.It is an object of the invention to eliminate the conventional neckwhich. heretofore has been a separate part which must be drawn andformed in a die, then inserted between the thermal barrier gasket at thetop of the jug and which was crimped into the top of the upper part ofthe body.

It is another object of the invention to provide a mechanically lockedjoint between the top of the jug liner and the top of the jug body. 7

It is another object of the invention to provide a builtin gasket toprevent thermal flow or loss between the temperature inside the jug andthe body outside. Preferably, this gasket is of a resilient materialsuch as extruded or molded rubber or plastic.

It is also an object of the invention to provide ease of assembly of thejug by virtue of a shoulder which provides a stop around the diameter ofthe liner against which a tool or jig may be placed to support theentire assembly while the upper part of the liner is spun over toencompass the top of the gasket.

It is another object of the invention to provide a vertical flange atthe top of the outer body portion of the jug so that the body isprevented from cutting through the gasket which might occur if theflange were not present when the jug is filled with liquid and subjectedto normal jarring movements.

It is another object of the invention to provide a neck construction fora jug which will cooperate with a simplified closure member which may bereadily removed and replaced when desired.

With these and other objects in view, my invention consists in theconstruction, arrangement and combination of the various parts of mydevice whereby the objects contemplated are attained, as hereinaftermore fully set forth, pointed out in my claims and illustrated in theaccompanying drawings, wherein:

Figure 1 is a perspective view of a thermal jug constructed inaccordance with the invention;

Figure 2 is a partial sectional view of the neck of the jug prior tospinning over the inner liner;

Figure 3 is a similar partial sectional view after the inner liner isspun over with one type of closure shown in dotted lines; and

Figure 4 is a partial sectional view of the thermal gasket member.

Referring specifically to the drawing for a detailed description of theinvention, numeral 11 designates generally a thermal jug which may beformed of an upper metallic outer shell 12 and a lower metallic outershell 13, which shells are joined together in any suitable manner asshown at 14. The inner shell which is also generally formed of sheetmetal is shown at 15 and is bent 2,834,503 Patented May 13, 1958 ICC atthe top thereof to provide a horizontal flange or shoulder 16, and anupwardly extending portion 17 having an upper end 18. As best shown inFigure 3, the upper end 18 is spun over a gasket generally indicated at21, the spun-over portion being shown at 19.

The outer shell 12 is provided with a vertically extending flange 20 atthe upper end thereof, as shown in Figures 2 and 3.

The gasket 21 which is formed preferably of extruded or molded rubber orplastic material includes a vertical slot 22 which communicates with ahorizontal slot 23 as best shown in Figure 4. The gasket is alsoprovided with a horizontal surface 24 communicating with a verticalinner surface shown at 25. The upper end of the gasket 21 is providedwith a rounded portion shown at 26.

In assembling the gasket, the fiat portion 24 seats on the shoulder 16of the inner liner is and the vertical portion 2t) of the outer shell 12extends into the slot 22 in the gasket 21. The horizontal portion of theouter shell 12 connecting with the flange Ztl extends into the slot 23in the gasket. After the gasket is thus assembled and seated on theshoulder 16, it is very easy to utilize the flange 16 as a stop againstwhich a tool or jig may be placed in order to support the assembly whilethe upper part of the liner 18 is spun over, as shown at 19, toencompass the portion 26 of the gasket.

A cover member which also may be formed of extruded or molded rubber orplastic is shown in dotted lines at Figure 3 by the numeral 2'7 and isprovided with a flange 28 around its periphery, which flange is spacedfrom the top of the outer shell 12 as shown at 29, so that the fingersmay be inserted between the two to permit easy removal of the closure27.

From the foregoing it is obvious that l have provided a greatly improvedneck construction for thermal jugs which is inexpensive, which providesfor ease in assembly, and which provides an eflicient thermal barrier atthe neck.

Some changes may be made in the construction and arrangement of theparts of my device without departing from the real spirit and purpose ofmy invention, and it is my intention to cover by my claims any modifiedforms of structure or use of mechanical equivalents which may bereasonably included within their scope.

I claim as my invention:

1. A neck construction for a thermal jug, which jug includes an outershell and an inner liner, said neck construction including upperportions of said shell and liner, said neck construction comprising, incombination: a horizontal annular shoulder formed on said upper portionof the inner liner, and an elongated vertical annular collar extendingupwardly from said shoulder; said upper portion of the outer shelldefining a horizontally extending annular wall of smaller innerdimension than the outer dimension of said annular shoulder on the innerliner and of larger inner dimension than the annular collar on theliner, and an upwardly extending annular collar of smaller height thanthe annular collar on the liner; a single preformed annular gasketfitted on the annular collar of the shell to engage the inner and outerwalls of the shells collar and to engage opposite annular portions ofsaid shells annular wall, and being of a size to engage annular portionsof the outer wall of the liners collar and of the liners horizontalshoulder; a portion of the liners collar extending above said gasketbeing spun over to define a lateral annular clamping wall engaging thegasket to compress same between said lateral clamping wall, said shellsannular wall, and the liners shoulder, and to define a downwardlyextending 2. A neck construction for a thermal jug, which jug includesan outer shell and an inner liner, said neck construction includingupper portions of said shell and liner, said neck constructioncomprising, in combination: a horizontal annular shoulder formed on saidupper portion of the inner liner, and an elongated vertical annularcollar extending upwardly. from said shoulder; said upper portion of theouter shell defining a horizontally extending annular Wall of smallerinner dimensions than the outer dimension of said annular shoulder onthe inner liner and of larger inner dimensionthan the annular collar onthe liner, and an upwardly extending annular collar of smaller heightthan the annular collar on the liner; gasket means surrounding theshells collar and engaging opposite sides of the shells annular wall,and engaging the liners shoulder and liners collar; and a portion of theliners collar being spun over and engaging top and outermost portions ofthe gasket means to effect compressive seals between the horizontalwalls and vertical collars on the liner and shell.

3. A neck construction for a thermal jug, which jug includes an outershell and an inner liner, said neck construction including upperportions of said shell and liner, said neck construction comprising, incombination: a horizontal annular shoulder formed on said upper porr .4tion of the inner liner, and an elongated vertical annular collarextending upwardly from said shoulder; said upper portion of the outershell defining a horizontally extending annular wall of smaller innerdimension than the outer dimension of said annular shoulder on the innerliner and of larger inner dimension than the annular collar on theliner, and an upwardly extending annular collar of smaller height thanthe annular collar on the liner; gasket means surrounding the shellscollar and engagingopposite sides of the shells annular wall, andengaging the liners shoulder and liners collar, said gasket alsodefining an outwardly extending annular headat its upper end; and aportion of the liners collar, extending above said gasket, being spunover to engage and grip said annular head on said gasket and to definelateral and vertical clamping walls which engage said gasket to effectcompressive seals between the horizontal walls and vertical collars onthe liner and shell.

References Cited in the file of this patent UNITED STATES PATENTS Kovacset al. Nov. 21, 1950 2,564,843 Hemp Aug. 21, 1951

